Garrick Gaffney, DO

Dr. Sahadevan took an adventurous path to Talkiatry. After perhaps thinking a little too hard about Intro to Philosophy in college - "the unexamined life is not worth living” - he first used his chemistry degree to work in pharmaceutical research. He changed course, working in computer network engineering, before deciding to find a more meaningful path. He worked as an EMT, then earned a Master's in Physiology before finally landing in medical school at Ohio State. Finding a surprising interest in psychiatry, he stayed at Ohio State for residency, and then a fellowship in forensic psychiatry. He is board-certified in both Psychiatry and Forensic Psychiatry. He previously worked as a forensic psychiatrist and evaluator at Ohio's maximum-security state psychiatric facility, as an attending psychiatrist running an inpatient unit for violent or dangerous patients, performing court-ordered evaluations, writing reports, and testifying when necessary. Dr. Sahadevan has also worked as a consultation-liaison psychiatrist, performing psychiatric consults at several general hospitals in Central Ohio's largest hospital system. He found great enjoyment in teaching successive generations of residents and medical students, serving as an adjunct faculty member at Ohio State, Ohio University, Wright State, and OhioHealth Riverside Methodist Hospital. He is excited for the next chapter of his journey, exploring another area of psychiatry at Talkiatry!

Dr. Merna Guirguis is a general psychiatrist known for her patient-centered and accessible approach. She blends compassion with evidence-based care, creating a supportive environment where patients feel heard. Her practice integrates psychiatric medication management with psychoeducation, empowering patients to make informed decisions about their treatment.

Dr. Guirguis emphasizes collaboration and transparency. She listens carefully to each patient’s concerns, encourages questions, and works to build a trusting therapeutic relationship. Her style is approachable and adaptable, ensuring patients feel comfortable sharing their experiences and actively participating in their care.

She begins by reviewing each patient’s history, concerns, and goals to craft personalized treatment plans. Dr. Guirguis combines current clinical needs with long-term wellness objectives, adjusting care collaboratively over time. When appropriate, she may recommend additional therapy to complement medication management and optimize outcomes.

Jodie Gardner is a Licensed Professional Counselor (LPC) licensed in Texas and California. She works with individuals, couples, and families ages 12 and older and has clinical experience addressing depression, anxiety, trauma, grief, addiction, and life transitions. Jodie is certified in Dialectical Behavior Therapy and has extensive experience supporting clients from diverse backgrounds and identities, including providing affirming care for LGBTQ+ individuals, those in non-traditional or complex relationships, and individuals navigating mood disorders, caregiver stress, and intimacy concerns.

Jodie believes every person has a unique story and deserves an individualized approach to care. She views therapy as a collaborative partnership grounded in open communication and mutual respect. Jodie creates a safe, non-judgmental space where clients can explore thoughts and emotions at their own pace, using thoughtful questions to help clients uncover insight, strengths, and meaningful solutions.

In the first session, Jodie invites clients to share their story and what brings them to therapy. Together, they identify goals and begin developing a personalized roadmap for treatment. Her approach integrates evidence-based practices such as CBT and DBT with trauma-informed care and mindfulness to support lasting growth and change.

Dr. Jennifer Yen is a double board-certified child, adolescent, and adult psychiatrist who has practiced in a variety of settings, including private, community, and academic medicine. She obtained her medical doctorate and general psychiatry residency at the University of Texas Medical School at Houston before completing her child and adolescent psychiatry fellowship at Baylor College of Medicine. She is currently a Clinical Professor of Psychiatry and Behavioral Sciences at Baylor College of Medicine and has authored multiple peer-reviewed publications on pediatric mental health. Dr. Yen is also a Distinguished Fellow of the American Academy of Child and Adolescent Psychiatry and has been on the editorial board of Clinical Psychiatry News. Dr. Yen believes in a collaborative treatment approach that includes use of pharmacology, therapeutic interventions, and support networks. While versed in a broad range of mental disorders, she is most passionate about anxiety, depression, minority mental health, and acculturation and intergenerational conflicts. She enjoys finding creative ways to address ongoing treatment issues, and utilizes digital media in the treatment setting.

Dr. Victoria Mustovic is a board-certified psychiatrist trained in general adult psychiatry who specializes in perinatal, postpartum, and LGBTQIA+ behavioral health. Clinical practice focuses on managing a variety of mental health conditions with particular interests in treating ADHD, OCD, anxiety, and mood disorders. A collaborative care approach is utilized to actively engage patients in treatment decisions and planning. Medication management is integrated with therapy to support a more comprehensive clinical approach. Therapy treatment focuses mainly on supportive therapy with use of additional therapy modalities based on patient needs. An evidence-based approach is combined with consideration of individual factors in order to work with patients to create a holistic, patient-centered treatment plan. Dr. Mustovic completed an undergraduate education at Allegheny College with a bachelor's degree in biology and double minor in psychology and chemistry. Dr. Mustovic went on to pursue a Medical Doctorate at Jacobs School of Medicine and Biomedical Sciences at the University of Buffalo, graduated Summa Cum Laude, and was inducted into Alpha Omega AlphaHonor Society for academic achievement. After medical school, Dr. Mustovic completed psychiatry residency at Allegheny Health Network. Additional experience includes both co-authoring a book chapter on women's behavioral health and presenting posters on several different topics in mental health for the Pittsburgh Psychiatric Society, including a presentation on the identification and management of complex trauma in victims of sex trafficking. Dr. Mustovic has 2 years training in outpatient perinatal and postpartum behavioral health and 6 months experience working as co-facilitator in a perinatal and postpartum intensive outpatient treatment program both through the Alexis Joy D'Achille Foundation for Postpartum Depression at West Penn Hospital. Work as a co-facilitator included assisting patient groups in understanding and developing coping skills for a variety of therapy modalities including mindfulness, behavioral activation, interpersonal, cognitive behavioral (CBT), and dialectical behavioral (DBT) therapies. Dr. Mustovic is also dedicated to serving the LGBTQIA+ community with experience in LGBTQIA+ patient care over 4 years at Allegheny Health Network in a variety of clinical settings including inpatient, outpatient, and intensive outpatient programs. Dr. Mustovic is passionate about providing a supportive treatment environment to help improve equal access to care and support patients in advocating for their needs and concerns in health care settings.

Karen Tonner, MSN, PMHNP-BC is an ANCC board-certified Psychiatric Mental Health Nurse Practitioner with over eight years of experience providing psychiatric care in outpatient and community mental health settings. She works with patients across the lifespan and treats a broad range of mental health conditions, including depression, anxiety disorders, attention-deficit/hyperactivity disorder (ADHD), obsessive-compulsive disorder (OCD), and post-traumatic stress disorder (PTSD).

Karen primarily provides medication management in conjunction with supportive therapy, using evidence-based practices to help patients achieve symptom relief and improved functioning. Her approach to care is holistic, person-centered, and collaborative, emphasizing shared decision-making and individualized treatment planning. She strives to create a welcoming, approachable, and supportive environment where patients feel comfortable being themselves and actively participating in their care. She believes that understanding each patient’s unique experiences, goals, lifestyle, and strengths is essential to effective mental health treatment.

Karen earned her Bachelor of Science in Nursing from Kennesaw State University and her Master of Science in Nursing from the University of Alabama at Birmingham. She is dedicated to continuing education to remain current with psychiatric research and is committed to delivering compassionate, high-quality care that helps patients feel heard, respected, and empowered.